(0 4 2)(1 15 12 8 6)(3 11 5)(7 21 9)(10 20 19 17 13)(14 18 16)
ALLOWS (11/8)-SEQUENCE
1: (0 1 2)

(0)(1 4 2 15 12 8 6)(3 11 5)(7 21 9)(10 20 19 17 13)(14 18 16)
2: (1 4 6)

(0)(1)(2 15 12 8 6)(3 11 5)(4)(7 21 9)(10 20 19 17 13)(14 18 16)
3: (3 11 5)

(0)(1)(2 15 12 8 6)(3)(4)(5)(7 21 9)(10 20 19 17 13)(11)(14 18 16)
4: (2 15 6)

(0)(1)(2)(3)(4)(5)(6 12 8)(7 21 9)(10 20 19 17 13)(11)(14 18 16)(15)